Cap-plate for cylindrical saw-blades and the attachment of the saw-blade thereto.



G. N. WILLIAMS, Jn. & J. WEGNER. GAP PLATE FOB. OYLINDRIGAL SAW BLADESAND THE ATTACHMENT OF THE SAW BLADE 'THERETO.

urmonmn FILED we. 15, 1007 Wm IE m w a d ew rnz nexus Furnace wasnmmri.o. c.

G. N. WILLIAMS, JR- & J. WEGNER.

GAPYPLATE FOR GYLINDRIGAL SAW BLADES AND THE ATTACHMENT OF THE SAW BLADETHERETO.

APPLICATION TILED AUG. 15, 1907.

Patented May 25, 1909 2 SEEEE-SHBBT 2. T =r- I71, Wi r 7/ INI/ENTORSw/r/vEssgs;

ATTORNEY UNITED STATES PATENT FlFll OE.

GEORGE N. WILLIAMS, JR, AND JULIUS WEGNER, OF NEW YORK, N. Y., ASSIGNORSTO SAID WILLIAMS.

CAP-PLATE FOR CYLINDRICAL SAW-BLADES AND THE ATTACHIJENT OF THE SAW-BLADE THERETO.

Application filed August 15, 1907.

To all whom it "may concern:

Be it known that We, GEORGE N. WIL- LIAMS, J r., a citizen of the UnitedStates, residing in the borough of Manhattan, city, county, and State ofNew York, and JULIUS IVEGNER, a citizen of Russia, and residing atAstoria, in the borough of Queens, in said city, have invented certainnew and useful Improvements in Cap-Plates for Cylindrical Saw-Blades andin the Attachment of the Saw-Blade Thereto, of which the following is aspecification.

The cylindrical saw-blade of our invention is adapted to cut cylindricalshapes from blocks of stone and other hard substances. Heretofore incutting cylindrical shapes from stone the operation has been ordinarilyperformed by hand, by the use of the lathe, or, it has been limited tothe production of narrow cylindrical forms (one foot or less indiameter) as by the use of the rotatingannular drill. In the annulardrill the cylindrical saw-blade or cutter is ordinarily held to itsrotating spindle by means of a screw-ca and, owing to the narrowdiameter of the cy inder and the thickness of the metal of which it iscomposed in proportion thereto, (which tends to rigidity of form in thecylindrical saw-blade) substantially no assistance or reinforcement isneeded by the saw-blade from the screw-cap or holder, for any purpose.The saw-blade of our invention however, which is adapted to out suchcylindrical blocks as are employed in the building up of columns forarchitectural work, is made of a single sheet of metal, by welding orotherwise, into the form of a hollow cylinder or enlarged annular drill,and owing to the diameter of the cylinder and the flexibility of themetal of which it is composed in proportion thereto, we have found thatconsiderable assistance and reinforcement is desirable in the cap-plateor holder, not only in compelling evenness in the operation of thecutters at the edge of the saw-blade but also in centering thesaw-blade, in assisting it to retain its circular form, and in forcingthe blade against the stone in the operation of cutting in cases wherepressure is employed; and, the object of our invention is to provide animproved ca plate or holder for such saw-blade which wi 1 among otherthings as is hereinafter shown tend toward evenness in cutting andSpecification of Letters Patent.

Patented May 25, 1909.

Serial No. 388,718.

narrowness in the circular kerf in the stone, thus economizing in theuse of diamonds or other cutters, also in waste of stone.

Our invention consists further in the employment of a multi licity ofholders for attachment of the cy lindrical saw-blade, located atintervals about the circumference of one-edge thereof, to draw the bladeat a number of different points tightly against the surface of thecaplate, thereby serving to true and brace the blade; and whereby alsothe saw-blade is readily centered relative to the center of rotation ofthe cap-plate and one edge thereof maintained in circular form ashereafter described; and whereby, also substantial parallelism betweenthe surface of the cap-plate and the cutting edge of the saw-blade ismaintained.

Our invention consists also in a cap-plate provided with means wherebycylindrical saws of varying diameters may be readily adapted thereto inview of the diameter of the product desired.

Our invention consists further in the various combinations andconstructions hereinafter described and claimed.

In the drawings which form part of this specification, Figure 1 is across section of the cap-plate and cylindrical sawblade, through theline A-B of Fig. 2 showing the holders by which the saw blade isattached to the cap-plate and the stops which main tain the circularform of one edge of the saw blade. Fig. 2 is a plan view showing, withreference to Fig. 1 the upper surface of the cap plate. Fig. 3 is a planview showing again with reference to Fig. 1 the under surface of the capplate, Fig. 4 is an enlarged view of a portion of the edge of the capplate showing a plan view of one of the stops indicated in Figs. 1. and3. Figs. 5 and 6 are enlarged views of a portion of the cap plate andsaw blade and of the holders shown in Fig. 1.

Referring now to Figs. 1, 2 and 3 :l is a saw-blade which is made of asingle sheet of metal by welding or otherwise into the form of a hollowcylinder. At one edge thereof called the cutting edge, are shown theteeth or cutters 2 armed with diamonds 3, inserted therein in theordinary manner. At the other edge of the saw-blade are drilledperforations 4 for reception of the bolt of invert ed U-shaped holders5, which are shown holding one edge of the saw-blade tightly against 1rotation of the ca'pplate and thus adapted to the surface of thecap-plate 7, as hereafter described.

To attain substantial evenness in the action of the cutters at thecutting edge of the saw-bladein other words to cause all the cutters tooperate as nearly as possible in the same plane, the saw-blade is facedby grinding or otherwise so that the cutting edge is made parallel tothe opposite edge, where it is to be drawn against the surface of thecap-plate. With this same object, among other things, the cap-plate 7which consists of a circular plate adapted to be attached to rotatingshaft 10 and to hold the cylindrical saw-blade is faced on one sidethereof as nearly as may be in a true plane at right angles to the aXisof rotation of shaft 10, for reception of the saw-blade. Perforations 4receive bolts 6 of U-shaped holders 5 as shown in Figs. 5 and 6.Cap-plate 7 is slotted at 11 for reception of the thread screw 8 at thetop of said U-shaped holders 5. Nut 9 with its Washer on the other sideof plate 7 is 1 adapted to screw 8 of said Ushaped holders 5 tightlydrawn at eighteen different points against the faced surface ofcap-plate 7. Obviously more or less of these U-shaped holders 5 may beemployed to firmly and tightly hold the saw-blade and brace it againstthe cap-plate 7. Enlarged views of said U-shaped holders 5 and the partsin con tact are shown in Figs. 5 and 6. Slots 11 of cap-plate 7 adaptthe cap-plate to the reception of saw-blades of different diameters inview of the length of said slots, because obviously the U-shaped holders5 are, as shown, removable along said slots 11 toward or away from thecenter of rotation of cap-plate 7. Thus, for example, when all of saidholders 5 are moved inward toward the center of rotation of thecap-plate they are adapted to hold and support a saw-blade in thecapplate of a much less diameter than that shown in Fig. 2, and in thepractical operation of the device in cutting columns for architecturalwork this availability in the same cap-plate for employment of any sizecylindrical saw-blade within the limitations of the length of slots 11is of substantial im portance. So also obviously other means than slots11 and holders 5 may be employed, our purpose being, among other things,that the cap-plate of our invention shall be supplied with holders whichare readily adjustable relatively to the center of the support ofcylindrical saw-blades of different diameters, and we do not limitourselves to the particular means here shown, viz.: slots 11 and holders5, to accomplish this result.

Obviously other means may be employed than those here shown to draw theedge of the cylindricalsaw-blade tightly against the surface of thecap-plate and to maintain it there, and we do not confine ourselves tothe specific means here shown; viz :slots 11 and U-shaped hold'ers5,-our purpose being among other things by employment of a multiplicityof holders, to draw the edge of the saw-blade at many different pointsabout its circumference tightly against the faced surface of thecap-plate in order to reinforce the flexible blade toward evenness inthe operation of the cutters at the edge thereof and to brace the bladeagainst the stone in the operation of cutting in cases Where pressure isemployed.

To attain as nearly as possible a true circular motion in thecylindrical saw-blade as it rotates under the action of the rotatingshaft 10 and cap-plate 7-in other words, to center the same as nearly aspossible on the center of rotation of cap-plate 7 and to readily fix allparts of the circumference of the saw-blade at the same radial distancefrom said center of rotation, we have shown in the drawings one means bywhich the edge of the saw-blade next to the cap-plate is kept incircular form, viz., stops 12 one adapted to each of said slots 11. Anenlarged view of stop 12, is shown in lan view in Fig. 4. Stop 12consists of a fat plate of metal or other suitable material perforatedfor reception of screw bolts 13 and provided with two lugs or armsextending toward and bearing against the inner surface of the edge ofthe saw-blade next the cap-plate as shown.

In Fig. 3 are shown guide rings, 14, 15 and 16 which are cut or markedupon the faced surface of the cap-plate as convenient indeXes or guidesto the operator in setting stops 12. These guide rings, 14, 15 and 16are each concentric with the center of rotation of cap-plate 7.saw-blade to its cap-plate the several stops 12 by means of their screwbolts 13, which serve to retain them in slots 11 are set with theassistance of guide rings 14, 15 and 16 at such equal radial distancefrom the center of cap-plate 7 as to adapt them accurately to thediameter of the saw-blade, whatever that may be. The saw blade is thenplaced against the faced surface of the cap-plate surrounding theseveral stops 12 and is drawn tightly against such faced surface bythread screws 8 and bolts 9 of holders 5, as already described. In thedrawing we have, shown eighteen of these stops 12, one adapted to eachslot 11 of cap-plate 7. Obviously Thus in adapting the i said holders 5being radially removable rela-- tion applies is adapted to cut the stoneas cutting edge of the tool travel as nearly as i than diamond teeth,however,

the number of stops 12 may be increased or 1 decreased in view of thesize of the cap-plate and the size and rigidity of form of thecylindrical saw-blade. Also obviously stops 12 may be placed externallyto the surface of the cylindrical saw-blade and the latter drawn tightlyagainst the surface of the cap plate in circular form within said stops,without de arting from the spirit of our invention. o also obviouslyother means may be employed than those here specifically shown, (stops12 and guide rings 14, 15 and 16) :-the purpose being to secure at oneedge of the cylindrical sawblade the substan tially circular form of thecylinder and to also provide a means of readily centering cylindricalsaws of various sizes on to the same cap-plate as desired. So alsoobviously we may dispense entirely with the use of the stops 12 andguide rings 14, 15 and 16 above referred to, and rely upon the accurateplacing of the holders 5 in slots 11 at proper distances from the centerof rotation of capplate 7 for the centering of the saw-blade,

tively to the center of rotation of said capplate as above described,and we do not confine ourselves to a construction wherein stops or guiderings are employed.

W'ater is supplied within the cylindrical saw-blade by means of rotatingshaft 10 which is made hollow at 17 for that purpose. It is, of course,understood that the cylindrical saw-blade to which our invenotherdiamond stone saws-by the action of the diamonds or other hardsubstances in I the teeth, rapidly moving upon the surface 1 of thestone to be cut; and obviously in the case of this cylindrical saw-bladesuch action is to be attained by a rapid rotary motion of the cap-plateand its saw blade. The importance will therefore be obvious to oneskilled in the art, of having all parts of the possible in the sameplane and on the true are of a circle, thereby diminishing the width ofthe kerf and the amount of work to be i performed by the cutters. In thesaw-blade we employ rectangular teeth 2, which are inserted at the edgeof the blade in ordinary manner. The diamonds are indicated at 3. Theyare inserted in the teeth for the purpose of rapid cutting. Any otherkind of teeth may be employed adapted to cut under the action of therapid rotary motion. Also obviously the rotating cylindrical saw-bladewith its cap-plate may be fed to the stone or the stone may be fed tothe rotating saw-blade; also rotating shaft 10 may be mounted in anyproper machine frame and rotary motion imparted thereto in any suitablemanner.

XV e claim 1. The combination with a cylindrical sawblade of a rotatingcap-plate therefor, means whereby said cap-plate may be rotated and amultiplicity of holders disposed about the circumference of one edge ofthe saw-blade adapted to draw and hold said edge at a number ofdifferent points against the surface of the cap-plate.

2. The combination with a cylindrical sawblade of a rotating cap-platetherefor, means whereby said cap-plate may be rotated, a multiplicity ofholders disposed about the circumference of one edge of the saw-bladeadapted to draw and hold said edge at a number of different pointsagainst the surface of the cap-plate and means supported by thecap-plate whereby said last named edge of the saw-blade is maintained incircular form.

3. The combination with a cylindrical sawblade of a rotating cap-platetherefor, means whereby said cap-plate may be rotated, a multiplicity ofholders disposed about the circumference of one edge of the saw-blade,adapted to draw and hold said edge at a number of different pointsagainst the surface of the cap-plate, means supported by the cap-platewhereby said last named edge of the saw-blade is maintained in circularform, and means supported by the cap-plate for readily centering thesaw-blade on the center of rotation of the cap-plate.

4. The combination with a cylindrical saw-blade faced at both edges andhaving its cutting edge armed with teeth or cutters, of a rotatingcap-plate faced upon one side, means whereby said cap-plate may berotated and a multiplicity of holders disposed about the circumferenceof the other e ge of the saw-blade adapted to draw and hold said edge ata number of different points against the faced surface of the cap-platewhereby substantial parallelism is maintained between the cutting edgeof the sawblade and the faced surface of the capplate.

5. The combination with a cylindrical saw-blade faced at both edges andhaving its cutting edge armed with teeth or cutters, of a rotatingcap-plate faced upon one side, means whereby said cap-plate may beretated, a multiplicity of holders disposed about the circumference ofthe other edge of the saw-blade adapted to draw and hold said edge at anumber of different points against the faced surface of the cap-plate,and means supported by the cap-plate whereby said last named edge of thesawblade is maintained. in circular form.

6. The combination with a cylindrical saw-blade faced at both edges andhaving its cutting edge armed with teeth or cutters, of a rotatingcap-plate faced upon one side, means whereby said cap-plate may berotated, a multiplicity of holders disposed about the circumference ofthe other edge of means supported by the cap-plate wherebysaid lastnamed edge of the saw-blade is maintained in circular form and means supported by the cap-plate for readily centering the saw-blade on thecenter of rotation of the cap-plate.

7. The combination of a cap-plate for rotating cylindrical saw-blades, amultiplicity of holders adapted to draw and hold one edge at a number ofdifferent points of a sawblade against one surface of the cap-plate andmeans in said cap-plate whereby sawblades of varying diameters may besupported therein.

8. The combination of a cap-plate for rotating cylindrical saw-blades, amultiplicity of holders adapted to draw and hold one edge at a number ofdifferent points of a sawblade against one surface of the cap-plate,

means in said cap-plate whereby saw-blades of varying diameters may besu ported therein and means supported by t e c-ap-' plate whereby asaw-b ads is maintained in circular form. r

9. The combination of a cap-plate for rotating cylindrical sawblades, amultiplicity of holders adapted-to draw and hold one edge at a number ofdifferent points of a sawblade against one surface of the cap-plate,means in said cap-plate whereby saw-blades of varying diameter may besupported therein, means supported by the cap-plate whereby a saw-bladeis maintained in circular form, and means supported by the capplate forreadily centering each saw-blade on the center of rotation of thecap-plate.

GEORGE N. WILLIAMS, JR. JULIUS WEGNER.

Witnesses:

A. H. BOWIE, JOHN D. SHERMAN, Jr.

